New York Natural Heritage Program
Sedge Wren
Cistothorus platensis (Latham, 1790)
Birds
Sedge Wren US NPS
Family: Wrens (Troglodytidae)

State Protection: Threatened
A native species likely to become an endangered species within the foreseeable future in New York (includes any species listed as federally Threatened by the United States). It is illegal to take, import, transport, possess, or sell an animal listed as Threatened, or its parts, without a permit from NYSDEC. 1) Any native species likely to become an endangered species within the foreseeable future in New York. 2) Any species listed as threatened by the U.S. Department of the Interior.

Federal Protection: Migratory Bird Treaty Act
The Migratory Bird Treaty Act implements various treaties and conventions between the U. S. and Canada, Japan, Mexico and the former Soviet Union for the protection of migratory birds. Under this Act, taking, killing, or possessing migratory birds, including nests or eggs, is unlawful unless specifically permitted by other regulations.


State Rarity Rank: S3B
A State Rarity Rank of S3B means: Typically 21 to 100 breeding occurrences or limited breeding acreage in New York State.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
Sedge Wrens may exhibit unusal breeding behavior. Some individuals from the upper midwest are suspected to travel and expand into the southern and northeastern parts of their range in July for a second nesting period. (Herkert et al. 2001)

State Ranking Justification [-]
The reasons this species is rare are not entirely known. New York is not in the core of this species range and it is only a local breeder. However, the loss of wetlands due to draining for development and agriculture has likely had an impact and populations historically known from the lower Hudson Valley and Long Island have been extripated (Herkert el al. 2001). There are 38 documented breeding population occurences in New York (New York Natural Heritage Program 2007). More sites are likely to exist in Jefferson and St. Lawrence counties, although it is unknown how many are occupied each year. The number of confirmed or probable atlas blocks increased from 34 blocks in the first Breeding Bird Atlas (1980-1985) to 48 in the second (2000-2005). Although the differences may be the result of lower coverage in the first atlas (McGowan and Corwin 2008).

Short-term Trends [-]

Long-term Trends [-]